Quickly and easily measure the TDS (Total Dissolved Solids) of your brew water with the Apax Lab TDS Meter. By providing an accurate reading in parts per million (PPM), it delivers instant results so you can fine-tune your brew water for optimal extraction and consistency. Simply place the meter in your brewing water and press the button to calculate the concentration of dissolved solids, giving you a precise understanding of your water’s strength. Take advantage of the "Hold" function to save your measurement until you're ready to use it again. Reliable, precise, and with a resolution of 1 PPM, this meter is an essential tool for any brewer looking to refine their water for the best possible extraction. [Note] For accurate readings, always measure at room temperature, as higher water temperatures will lead to artificially elevated numbers due to increased electrical conductivity. If adding fresh Apax Lab droplets or any other mineral adjustments, ensure the water is well-stirred before taking a measurement to achieve an even distribution.